四级练习

英语四级考试练习题及答案（满分120分，考试时间90分钟）一、选择题：（本题共20小题，每小题3分，共60分）1. The research team decided to use an underwater ______ saw to cut the ship into sections before lifting it up.A. electricB. electricalC. electrifyingD. electrician2. A well-meaning lady gave Robert a wrong _____ and he finished at the theatre instead of the school.A. adviceB. informationC. directionD. way3. If you keep getting wrong numbers, your phone could be _____.A. deceptiveB. defectiveC. deficientD. ineffective4. Researchers claim it’s all the high-rises in this area that make the _____ on television sets so poor.A. stationB. reactionC. programmeD. quality5. Mr. Johnson is ______ to our party.A. more than pleased to comeB. pleased more than to comeC. more pleased than to comeD. more pleasing than to come6. Ms Simms is very sensitive ______ criticism.A. ofB. inD. on7. It is an exception ________ the rules.A. ofB. inC. againstD. to8. She solved the problem _________a stroke.A. onB. ofC. atD. through9. Death always taken us _________ surprise, even though we know it is inevitable.A. inB. out ofC. byD. through10. The lady insists on her constitutional right _______ a passport in her maiden name.A. onB. toD. that11. Human behavior is mostly a product of learning, _______ the behavior of a animal depends mainly on instinct.A. whereasB. soC. unlessD. that12. Wood furniture does not depreciate in value _______ properly handled and protected.A. ifB. hasC. andD. that13. I am determined that my son ______ have a better start than I did.A. canB. shallC. mustD. will14. You ________ drive fast, there is a speed limit here. Moreover, we have plenty of time, so you ______ drive so fast.A. mustn't, needn'tB. needn't, needn'tC. mustn't, mustn'tD. needn't, mustn't15. You _______ worry about her. She ______ well already.A. needn't, may getB. don't need, may getC. mustn't, getsD. needn't, may have gets16. Though the hotel has only been open for a few days, it is already ____A____ booked.A. heavilyB. expectantlyC. immediatelyD. quickly17. Such euphemisms may be stylistically “permissible” if they are kept within__D___.A. boundariesB. rangesC. bordersD. limits18. “Anyone who followed my __A_____ of rules would be blossed with a richer life and boundless love from his family.” David said.A. setB. packetC. groupD. pack19. Richard asked me to ___C__ the age of Aaron Copland, the American composer of ballet music, when he composed Billy the Kid?A. supposeB. wonderC. guessD. think20. The rising numbers of those out of work will add greatly to the government’s_B___problems.A. highB. steeplyC. hardD. rocket二、完型填空（共计20分）Space is a dangerous place, not only because of meteors(流星) but also because of rays from thesun and other stars.The atmosphere again acts 1 our protective blanket on 2 .Light gets through, and thisis essential 3 plants to make the food which we 4 .Heat, 5 , makes our environments tolerable and some ultraviolet rays(紫外线的) penetrate the 6 .Cosmic(宇宙的) rays of various kinds come 7 the air fromouter space, but 8 quantities of radiation from the sun are screened off. 9 men leave theatmosphere theyare 10 to this radiation; 11 their spacesuits or the walls of their spacecraft, if they are inside, 12 prevent alot of radiation damage.Radiation is the greatest known danger to explorers in 13 .Doses of radiation are measured in 14 called“rems (雷目)”.We all 15 radiation here on earth from the sun, from cosmic rays and from radioactive minerals.The“ 16 ”dose of radiation that we receive each year is about twomillirems; it 17 according toswheresyou live, and this is a very rough estimate.Scientists have reason tothink 18 a man can 19 far more radiation 20 without being damaged; the figure of 60 rems has beenagreeD.1.A.for B. with C.on D.as2.A.stars B. sun C.earth D.space3.A.with B. from C.under D.fore B. live C.eat D.get5.A.again B. also C.besides D.too6.A.environment B. space C.atmosphere D.earth7.A.across B. to C.from D.through8.A.valid B. enormous C.various D.proper9.A.As soon as B. As well as C.As much as D.As possible as10.A.shown B. exposed C.faced D.covered11.A.but B. because C.so D.so that12.A.get B. make C.have D.do13.A.earth B. atmosphere C.space D.environment14.A.pieces B. units C.parts D.elements15.A.receive B. accept C.bring D.catch16.A.conventional B. common C.general D.normal17.A.shifts B. converts C.modifies D.varies18.A.what B. which C.that D.why19.A.put up with B. keep up with e up with D.catch up with20.A.from B. than C.as D.away三、阅读理解：(共25分)Years ago the idea of disabled people doing sport was never heard of.But when the annual games for the disabled were started at Stoke Mandeville,England in 1984 by Sir Ludwig Guttmann,the situation began to change.Sir Ludwig Guttmann,who had been driven to England in 1939 from Nazi Gernamy,had been asked by the British government to set up an injuries centre at Stoke Mandeville Hospital near London.His ideas about treating injuries included sport for the disabled.In the first games just tow teams of injured soldiers took part.The next year,1949,five teams took part.From those beginnings,things have developed fast.Teams now come from abroad to Stoke Mandeville every year.In 1960 the first Olympics for the Disabled were held in Rome,in the same place as the normal Olympic Games,although they are organizedseparately.In other years Games for the Disabled are still held at Stoke Mandeville.In the 1984 wheelchair Olympic Games,1064 wheelchair athletes from about 40 countries took part.Unfortunately,they were held at Stoke Mandeville and not in Los Angeles,along with the other Olympics. The Games have been a great success in promoting international friendshiop and understanding,and in proving that being disabled does not mean you can't enjoy sport.One small source of disappointment for those who organize and take part in the games,however,has been the unwillingness of the International Olympic Committee to include disabled events at the Olympic Games for the able-bodied.Perhaps a few more years are still needed to convince those fortunate enough not to be disabled that their disabled fellow athlets should not be excluded.1.The first games for the desabled were held _____ after Sir Ludwig Guttmann arrived in England.A.40 yearsB.21 yearsC.10 yearsD.9 years2.Besides Stoke Mandeville,surely the games for the disabled were once held in _____.A.New YorkB.LondonC.RomeD.Los Angeles3.In Paragraph 3,the word "athletes" means _____.A.people who support the gamesB.people who watch the gamesC.people who organize the gamesD.people who compete in the games4.Which of the following statements in NOT true?A.Sir Ludwig Guttmann is an early organizer of the games for the disabled.B.Sir Ludwig Guttmann is an injured soldier.C.Sir Ludwig Guttmann is from Germany.D.Sir Ludwig Guttmann is welcomed by the British government.5.From the ,we may conclude that the writer is _____.A.one of the organizers of the games for the disabledB.a disabled person who once took part in the gamesC.against holding the games for the disabledD.in favour of holding the games for the disabled四、书面表达：请起草一份中学学校通知，用一段话说明以下要点：参观日期： 3月25日，星期天时间：早上8点钟出发。

英语四级练习题一、听力理解（共15题，每题1分）Section A1. What is the man's major?A. BiologyB. ChemistryC. PhysicsD. Mathematics2. Why does the woman want to go to the library?A. To borrow a book.B. To return a book.C. To study for an exam.D. To meet a friend.Section B3. What is the main topic of the lecture?A. Climate change.B. Renewable energy.C. Fossil fuels.D. Environmental protection.4. What is the speaker's opinion about the future of renewable energy?A. It will replace fossil fuels completely.B. It is too expensive to be widely adopted.C. It has a promising future.D. It is not environmentally friendly.Section C5-15. (略)二、阅读理解（共20题，每题2分）Passage 1The article discusses the importance of a balanced diet and regular exercise for maintaining good health. It also emphasizes the role of sleep and stress management in overall well-being.6. What does the article suggest is crucial for health?A. A balanced diet.B. Regular exercise.C. Adequate sleep.D. All of the above.7. According to the article, what can lead to poor health?A. Lack of sleep.B. Excessive stress.C. Both A and B.D. None of the above.Passage 2The passage explores the impact of technology on education, highlighting both the benefits and the challenges it presents.8-15. (略)Passage 3This passage examines the role of social media in modern society, discussing its influence on interpersonal relationships and the spread of information.16-20. (略)三、写作（共1题，30分）Task: Write an essay of about 120-150 words on the topic "The Influence of Social Media on Young People."四、翻译（共1题，20分）Task: Translate the following paragraph from English to Chinese.In recent years, the rapid development of technology has brought about significant changes to our daily lives. The advancement in communication technology has made it possible for us to stay connected with friends and family no matter where we are in the world.注意：听力部分的答案需要根据实际听力材料来确定，而阅读理解部分的答案则需要根据文章内容来选择。

2023年6月英语四级语法练习及答案(1)1.Lung cancer, like some other cancers, often doesn’t produce ________ until it is too late and has spread beyond the chest to the brain, liver or bones.A) trailsB) therapiesC) symptomsD) symbols2.With the increasing unemployment rate, workers who are 50 to 60 years old are usually the first to be ________.A) laid offB) laid asideC) laid outD) laid up3.The physical differences between men and women can be ________ directly to our basic roles as hunters and child-bearers.A) pursuedB) tracedC) switchedD) followed4.It is clear that the dog has a much greater ________ of its brain devoted to smell than is the case with humans.A) compositionB) compoundC) percentD) proportion5.American college students are increasingly ________ with credit card debt and the consequences can be rather serious.A) boostedB) burdenedC) dischargedD) dominated1.答案：C参考译文：肺癌和其他癌症一样经常没有症状直到晚期扩散到脑、肝和骨头才会有症状产生。

大学英语四级试卷（满分120分，考试时间90分钟）一、选择题：（本题共20小题，每小题3分，共60分）1. The Martian surface temperature is a 100 degrees C below zero at night, so that butter put outside will not ________.A. thawB. dissolveC. meltD. fuse2. Whose _______ was it to pay a visit to Lake Erie?A. dreamB. purposeC. thoughtD. idea3. There is a _____ of vegetables in Shanghai at the moment because of the cold weather.A. shortageB. wantC. needD. desire4. Mary really couldn’t stand the music by Richard Wagner, _____ David couldn’t hear enough of it.A. becauseB. whereasC. althoughD. when5. The scientists realized it would be too ________ to lift the ship in one piece because it was fragile.A. boldB. doingC. riskyD. dangerous6. Don’t leave your brand-raw sweater and pajamas on the floor; please hang them on the _______ behind the door.A. rodB. poleC. hookD. log7. Christopher couldn’t tell us the name of the monster he read about in the newspaper although it was on the _____ of his tongue.A. tipB. endC. slipD. back8. It is ________ whether Sam will come to attend his best friend’sfuneral as he has taken the town’s money and made off with it.A. unlikelyB. doubtfulC. improbableD. unexpected9. To attend the grand dinner party, the French cabinet minister had a new suit made to _________.A. OrderB. directionC. instructionD. command10. When Jim was tidying up his drawer, he ____ his mother’s prize possession the tri-coloured glazed miniature terra-cotta warrior.A. came roundB. came acrossC. came overD. came into11. When the crowd saw the prize-fighter stretched out on the canvas, shouts and cheers _______ from it.A. broke upB. broke forthC. broke throughD. break upon12. This detective story might not be _______ interesting to keep the child awake.A. enoughB. adequatelyC. amplyD. sufficiently13. The two pieces of fried steak Mr King had for dinner gave him _____.A. an upset stomachB. a headacheC. a sore throatD. an infection14. If reading is to accomplish anything more than _______ time, it must be active.A. wastingB. spendingC. passingD. idling15. The _____ from the airport was really tiring because it was situated for from the city.A. flightB. travelC. crossingD. journey16. _____ the Washington Monument and the Capitol, Washington D. C. would be a completely horizontal city.A. It were not forB. For it were notC. Were it not forD. weren't it for17. ______, I'll marry him all the time.A. Being he rich or poorB. Was he rich or poorC. Be he rich or poorD. Whether rich or poor18. A sneeze cannot be performed voluntarily, _____ be easily suppressed.A. nor cat itB. and cannot itC. nor it canD. it cannot19. Few of the gold seekers who flocked to California were experienced miners______ that they had to be.A. but neither did they feelB. neither did they feelC. and so did they feelD. and they felt too20. _____, their help, we would not have succeeded.A. Hadn't been forB. Had not it been forC. Had it not been forD. It hadn't been for二、完型填空（共计20分）Today the car is the most popular sort of transportation in all of the United States. It has completely 1 thehorse as a 2 of everyday transportation. Americans use their car for 3 90% of all 4 business. MostAmericans are able to 5 cars. The average price of a 6 made car was ,050 in 1950, ,470 in 1960 and upto ,750 7 1975.During this period American car manufacturers set about 8 their products and workefficiency.As a result, the yearly income of the 9 family increased from 1950 to 1975 10 than the priceof cars. For this reason 11 a new car takes a smaller 12 of a family’s total earnings today. In 1951 13 it took 8.1 months of an average family’s 14 to buy a new car. In 1962 a new car 15 8.3 of a family’sannual earnings, by 1975 it only took 4.75 16 income. In addition, the 1975 cars were technically 17 tomodels from previous years. The 18 of automobile extends throughout the economy 19 the car is soimportant to American. Americans spend more money 20 keeping their cars running than on any otheritem.1.A.denied B.reproduced C. replaced D. ridiculed2.A.means B.mean C. types D. kinds3.A.hardly B.nearly C. certainly D. somehow4.A.personal B.personnel C. manual D. artificial5.A.buy B.sell C. race D. see6.A.quickly B.regularly C. rapidly D. recently7.A.on B. in C.before D.after8.A.raising B. making C.reducing D.improving9.A.unusual B. smallest C.average D.biggest10.A.slower B. equal C.faster D.less11.A.bringing B. obtain C.bought D.purchasing12.A.part B. half C.number D.quality13.A.clearly B. proportionally C.percentage D.suddenly14.A.income B. work C.plans D.debtsed B. spent C.cost D.needed16.A.month’s B. year’s C.family D.year17.A.famous B. superior C.fastest D.better18.A.running B. notice C.influence D.affect19.A.then B. as C.so D.which20.A.to B. in C.of D.for三、阅读理解：(共25分)Years ago the idea of disabled people doing sport was never heard of.But when the annual games for the disabled were started at Stoke Mandeville,England in 1984 by Sir Ludwig Guttmann,the situation began to change.Sir Ludwig Guttmann,who had been driven to England in 1939 from Nazi Gernamy,had been asked by the British government to set up an injuries centre at Stoke Mandeville Hospital near London.His ideas about treating injuries included sport for the disabled.In the first games just tow teams of injured soldiers took part.The next year,1949,five teams took part.From those beginnings,things have developed fast.Teams now come from abroad to Stoke Mandeville every year.In 1960 the first Olympics for the Disabled were held in Rome,in the same place as the normal Olympic Games,although they are organized separately.In other years Games for the Disabled are still held at StokeMandeville.In the 1984 wheelchair Olympic Games,1064 wheelchair athletes from about 40 countries took part.Unfortunately,they were held at Stoke Mandeville and not in Los Angeles,along with the other Olympics. The Games have been a great success in promoting international friendshiop and understanding,and in proving that being disabled does not mean you can't enjoy sport.One small source of disappointment for those who organize and take part in the games,however,has been the unwillingness of the International Olympic Committee to include disabled events at the Olympic Games for the able-bodied.Perhaps a few more years are still needed to convince those fortunate enough not to be disabled that their disabled fellow athlets should not be excluded.1.The first games for the desabled were held _____ after Sir Ludwig Guttmann arrived in England.A.40 yearsB.21 yearsC.10 yearsD.9 years2.Besides Stoke Mandeville,surely the games for the disabled were once held in _____.A.New YorkB.LondonC.RomeD.Los Angeles3.In Paragraph 3,the word "athletes" means _____.A.people who support the gamesB.people who watch the gamesC.people who organize the gamesD.people who compete in the games4.Which of the following statements in NOT true?A.Sir Ludwig Guttmann is an early organizer of the games for the disabled.B.Sir Ludwig Guttmann is an injured soldier.C.Sir Ludwig Guttmann is from Germany.D.Sir Ludwig Guttmann is welcomed by the British government.5.From the ,we may conclude that the writer is _____.A.one of the organizers of the games for the disabledB.a disabled person who once took part in the gamesC.against holding the games for the disabledD.in favour of holding the games for the disabled四、书面表达：请起草一份中学学校通知，用一段话说明以下要点：参观日期： 3月25日，星期天时间：早上8点钟出发。

英语四级语法练习题目一、单项选择题1. My brother and I __________ dinner together every evening.A. haveB. hadC. hasD. having2. The teacher told us ________ late for class again.A. not to beB. not beC. to not beD. to be not3. The invitation ________ he sent me was very beautiful.A. whoB. whomC. whoseD. which4. I prefer watching movies ________ staying at home.A. inB. atC. toD. than5. ________ many times, he still made the same mistake.A. TellingB. TellC. ToldD. Tells6. It is necessary ________ an appointment in advance.A. makeB. makingC. to makeD. made7. The harder you work, ________ results you will get.A. the betterB. the goodC. the bestD. the well8. If it ________ tomorrow, we will go for a picnic.A. is not rainingB. will not rainC. does not rainD. did not rain9. Linda, along with her parents, ________ going to the concert tonight.A. isB. areC. wereD. was10. Kate asked Tom ________ he returned the book to the library.A. ifB. thatC. whetherD. what二、完形填空There was once a wise man who would travel __11__ all the time, walking from town to town to __12__ his wisdom. One day, he __13__ gold on his journey. It was a heavy burden (负担), so he wanted to __14__ it with someone. He thought, "I should __15__ it to the governor. Surely he is a trustworthy person and will __16__ it."When the wise man arrived at the governor's house, the guards __17__ him in, but the governor refused to see him. "I am __18__ with more important matters," he said.The wise man then came across a poor farmer on the road. He thought, "The farmer __19__ seem like a very important person, but perhaps he can __20__ me."The farmer was overjoyed when the wise man __21__ him the gold. He thanked him and went home, __22__ that he was finally a rich man.But the next day, a terrible __23__ struck the town. The wise man heard about it and decided to __24__ the town to offer his help. When he arrived, he was __25__ that the farmer's house had been burnt down. The farmer and his family were left with nothing.The wise man learned that __26__ people for their appearance or social status is not wise. Instead, he should have given the gold to someone __27__ genuinely needed it.From then on, the wise man vowed to __28__ those in need without judging them. He __29__ that everyone deserves kindness, regardless of their background. And so, he continued his journey of spreading wisdom to every corner of the world.11. A. world B. countries C. cities D. continents12. A. share B. show C. gain D. prove13. A. found B. earned C. collected D. received14. A. pass B. split C. share D. carry15. A. question B. sell C. offer D. lend16. A. lose B. appreciate C. find D. keep17. A. turned B. stopped C. allowed D. directed18. A. occupied B. bothered C. concerned D. engaged19. A. might not B. must not C. would not D. should not20. A. help B. criticize C. convince D. trust21. A. borrowed B. showed C. handed D. presented22. A. deciding B. dreaming C. imagining D. expecting23. A. danger B. fire C. illness D. storm24. A. escape B. explore C. leave D. visit25. A. informed B. told C. surprised D. devastated26. A. thanking B. judging C. forgiving D. rewarding27. A. who B. whom C. whose D. which28. A. consider B. admire C. assist D. support29. A. acknowledged B. insisted C. imagined D. recognized三、错误判断题1. Yesterday, I have seen an interesting movie.A. YesB. No2. He speaks English fluently, so he didn't have any problem understanding the lecture.A. YesB. No3. If I will see him, I will tell him the news.A. YesB. No4. Where is the book that I gave to you last week?A. YesB. No5. My sister asked me where are you from.A. YesB. No四、改错题1. I have visited (A) Tokyo, Japan (B) last summer (C) and loved (D) its beautiful (E) scenery.2. Gina asked Tom what time does the train (A) leave, but (B) he said (C) he didn't know (D) because he (E) hadn't checked.3. The teacher told (A) us study (B) harder (C) for (D) the upcoming (E) exam.4. This is a (A) very kind (B) person, which (C) is always (D) willing to(E) help others.5. Ted passed (A) the exam not only (B) because he (C) studied hard (D) but also (E) he was confident.五、填空题1. I will never forget the day ________ we won the championship.2. Can you tell me ________ you will be arriving?3. We need to find a solution ________ this problem as soon as possible.4. She gave me a pen ________ ink had run out.5. The company has been in business ________ over ten years.六、翻译题1. 我弟弟正在学习如何游泳。

英语四级考试练习题及答案（满分120分，考试时间90分钟）一、选择题：（本题共20小题，每小题3分，共60分）1. People were certain Thomas _____ his foot on the road to fame when he arrived in New York.A. putB. trodC. setD. Placed2. They designed ______ than a matchbox.A. no bigger a modelB. a no bigger modelC. a bigger model noD. a model no bigger3. American automobiles need ______ than imported cars do.A. more care precisionB. care precision moreC. more precision careD. precision care more4. This problem is ______ an economic than a political one.A. no moreB. no moreC. much moreD. no better5. John is ______ of the two boys.A. a more diligentB. the more diligentC. the most diligentD. more diligent6. Passengers may leave bulky articles under the stairs ______ the conductor's permission.A. atB. withC. onD. in7. You won't get in _____ the end of the act.A. tillB. atC. byD. in8. He said he was in debt and asked me for a loan ______ $50.A. onB. forC. withD. of9. What tremendous achievements we have made _______ all fronts in the past few years!A. inB. onC. atD. of10. John is unfortunately devoid _______ a sense of humour.A. withB. ofC. toD. from11. It will rain, _____ the barometer is falling.A. soB. forC. asD. since12. We won't encourage him to do that _______ he is in good health.A. even ifB. in caseC. even thoughD. when13. Nature not only gave the Middle Atlantic region fine harbors, ______ a first-class system of inland waterways.A. however endowed it onB. so endowing this onC. thus endowing this onD. but endowed it with14. I have little doubt about his competence; ____ he is well-qualified for the job.A. althoughB. moreoverC. yetD. because15. I am telling you this _______ you should make a mistake.A. so thatB. thoughC. untilD. lest16. Henry A dams felt so hungry that he ordered a double _____ of fish.A. pieceB. partC. portionD. section17. The highest mountain in New Zealand, Mount Cook, is now 10 feet shorter because some of the ____ at its top slid down in 1991.A. landB. soilC. earthD. dirt18. When Ken studied at Stanford University, he Cived _____ the University.A. out ofB. apart fromC. distant fromD. a long way from19. The king’s daughter threatened to drink the _____ chemical if he refused her request.A. deathlyB. deadlyC. fatalD. mortal20. The Sears Company recently made _______ because of financial troubles.A. CutsB. demandsC. omissionsD. orders二、翻译（共计10分）1. 电影开演半小时了。

大学英语四级单选题练习一、词汇部分1、He ______ to get to the top of the mountain, so he took a shortcut.A. managedB. managed toC. triedD. attempted(尝试)答案：B. managed to。

句中说“他成功地到达了山顶”，所以选B。

其他选项不符合语境。

2、He ______ his father’s business after graduation.A. took overB. took onC. took offD. took in答案：A. took over。

句中说“他毕业后接管了父亲的生意”，所以选A。

take over接管，take on承担，take off脱掉，起飞，take in吸收，欺骗。

3、She ______ in the school play for three months before the final performance.A. rehearsedB. rehearseC. will rehearseD. will be rehearsing答案：A. rehearsed。

句中说“她在最后一场演出之前在学校排练了三个月”，所以应该用一般过去时态，即she rehearsed。

其他选项不符合时态要求。

4、He ______ to his boss for the mistake he had made.A. apologizedB. apologizesC. will apologizeD. is apologizing 答案：A. apologized。

句中说“他向老板道歉”，根据语境可知应该用过去时态，即apologized。

其他选项不符合时态要求。

5、She ______ a job as a translator at the airport.A. applied forB. applied toC. applied inD. applied by答案：A. applied for。

大学英语四级试练习卷一、阅读理解阅读理解（一）No one knows exactly how many disabled people there are in the world,but estimates suggest the figure is over 450million. The number of disabled people in India alone is probably more than double the total population of Canad A. In the united Kingdom,about one in ten people have somedisability.Disability is not just something tht happens to other people:as we get older,many of us will become less mobile,hard of hearing or have failing eyesight. Disablement can take many forms and occur at any time of life.Some people are born with disabilities.Many others become disabled as they get older.There are many progressive disabling diseases.The longer time goes on,the worse they become.Some people are disabled in accidents. Many others may have a period of disability in the form of a mental illness.All are affected by people's attitude towards them. Disabled people face many physical barriers.Next time you go shopping or to work or visit friends,imagine how you would manage if you could not get up steps,or on to buses and trains.How would you cope if you could not see where you were going or could not hear the traffic? But there are other barriers:prejudice can be even harder to break down and ignorance inevitably represents by far the greatest barrier of all. It is almost impossible for the able-bodied to fuly appreciate what the severely disabled go through,so it is important to draw attention to these barriers and show that it is the individual person and their ability,not theirdisability,which counts.1.The first paragraph points out that______.A.there are many disabled people in the worldB.the number of disabled people in India is the greatestC.India has much more disabled people that CanadaD.it is impossible to get an exact figure of the world's disabled people2.The key word in paragraph 4 is _____.A.disabilityB.ignoranceC.prejudiceD.barriers3.The last word of the "counts" most probably means_____.A.is most importantB.is consideredC.is includedD.is numbered4.Which of the following statements is not true?A.even the able-bodied many lose some of their body functions when they get older.B.there are about 10 percent disabled persons in the UK.C.the whole society should pay due attention to the barriers faced by the disabled peopleD.there still exists prejudice against the disabled which results mainly from ignorance5.It can be concluded from the that____.A.we should try our best to prevent disablementB.both physical and metal barriers are hard to break downC.we just take a proper attitude towards the disabledD.the able-bodies people will never fully understand the disabled 30/200 阅读理解（二）Flying over a desert area in an airplane, two scientists looked down with trained eyes at trees and bushes. After an hour's flight one of the scientists wrote in his book, 'Look here for probable metal' Scientists in another airplane, flying over a mountain region,sent a message to other scientists on the ground,'Gold possible.' Walking across hilly ground, four scientists reported,'This ground should be searched for metals.' From an airplane over a hilly wasteland a scientist sent back by radio one word,'Uranium'. None of the scientists had X-ray eyes: they had no magic powers for looking down below the earth's surface. They were merely putting to use one of the newest methods of location minerals in the ground---using trees and plants as signs that certain minerals may lie beneath the ground on which the trees and plants are growing. This newest method of searching for minerals is based on the fact that minerals deep in the earth may affect the kind of bushes and trees that grow on the surface.At Watson Bar Creek, a brook six thousand feet high in the mountains of British Columbia, Canada,a mineral search group gathered bags of tree seeds. Boxed were filled with small banches from te trees. Roots were dug and put into boxes. Each bag and box was carefully markeD. In a scientific laboratory the parts of the forest trees were burned to ashes and tested .Each small part was examined to learn whether there were minerals in it. Study of the roots , branches,and seeds showed no silver. But there were small amounts of gold in the roots and a little less gold in the branches and seeds. The seeds growing nearest to the tree trunk had more gold than those growing on the ends of the branches. If the trees had not indicated that there was gold in the ground, the scientists would not have spent money to pay for digginginto the deeper. They did dig and found more fold below. They dug deeper. They found large quantities of gold.1.Scientists were flying over a desert or hilly wasteland or a mountain region in order to search for _____ in the ground.A.goldB.silverC.metalsD.minerals2.The study of trees,branches and roots indicates that_______.A.there were larger amounts of gold in the branches than in the seeds.B.there were small amounts of gold in the roots than in the branchesC.there were larger amounts of gold in the seeds growing nearest to the tree trunk than seeds growing on the ends of branches.D.there were more gold in the branches than in the roots3.Which is the best title ?A.Scientists searching for metals with sepcial powerB.New methods of searching for mineralsC.Gold could be found by trees and plantsD.A new method of searching for minerals---using trees and plants4.Which of the following is not mentioned as part of a tree that can help find minerals?A.leavesB.rootsC.branchesD.seeds5.The scientists were searching for minerals by using ______.A.X-rayB.magic powerC.a special instrumentD.trained eyes阅读理解（三）Asked to name their favorite city, many Amerians would select San Francisco began as a small Spanish outpost located on a magnificent bay.The town was little more than a village serving ranchers when the United States tookpossession of it in 1846 during the war with Mexico. San Francisco sprang into a city overnight because of the nearby discovery of gold in 1848.A great rush to California took place.Wagon trains plodded their dangerous way across 2000 miles of prairie and mountains,while hundreds of sailing vessels made the equally hazardous trip around the Horn.The vessels disgorged thousands of passengers -- then the crews deserted teir ship and hundreds of vessels were left to rot in thebay.Within two years,California had enough population to become a state and San Francisco was for many years the hub of that newly-arrived population. The city’s present popularity is due to an excellent climate, an easy style of living ,good food,and numerous tourist attractions. The city is famous for its cable cars which "clang and bang" up the steep hills,and for its excellent seafood stals along the wharf. Most visitors arriving from nations in the Pacific Basin spend several days getting to know the town.1.According to this article, who were the first Californians?A.deserters from sailing shipsB.spanish ranchersC.gold minersD.tourists2.san francisco’s appeal includes all of the following factors____.A.attractive lifestyle,good seafood,desirable weatherB.tourist attactions,extreme seasons,cable carsC.wagon trains,gold mining,good climateD.cable cars,pleasent climate,flat terrain3.san francisco today is a thriving city because of ____.A.heavy industryernmental headquartersC.goldminingD.trade and tourism4.In waht year did California become an American state?A.1850B.1852C.1846D.1848二、完型填空完型填空（一）If you were to begin a new job tomorrow, you would bring with you some basic strengths andweaknesses. Success or (1) in your work would depend, to (2) great extent, (3) your ability to use yourstrengths and weaknesses to the best advantage. (4) the utmost importance is your attitude. A person (5)begins a job convinced that he isn't going to like it or is (6) that he is going to ail is exhibiting aweakness which can only hinder his success. On the other hand, a person who is secure (7) his belief thathe is probably as capable (8) doing the work as anyone else and who is willing to make a cheerfulattempt (9) it possesses a certain strength of purpose. The chances are that he will do well.(10) the prerequisite skills for a particular job is strength. Lacking those skills is obviously aweakness. A book-keeper who can't add or a carpenter who can't cut a straight line with a saw (11)hopeless cases.This book has been designed to help you capitalize (12) the strength and overcome the (13) that youbring to the job of learning. But insgroupsto measure your development, you must first (14) -- stock ofswheres you stand now. (15) -- we get further along in the book, we’ll be (16) -- in some detail withspecific processes for developing and strengthening (17) -- skills. However, (18) -- begin with, youshould pause (19) -- examine your present strengths and weaknesses in three areas that are critical toyour success or failure in school: your (20) --, your reading and communication skills, and your studyhabits.1.A.improvement B.victory C. failure D. achievement2.A.a B.the C. some D. certain3.A.in B.on C. of D. to4.A.Out of B.Of C. To D. Into5.A.who B.what C. that D. which6.A.ensure B.certain C. sure D. surely7.A.onto B.on C. off D. in8.A.to B.at C. of D. for9.A.near B.on C. by D. at10.A.Have B.Had C. Having D. Had been11.A.being B.been C. are D. is12.A.except B.but C. for D. on13.A.idea B.weakness C. strength D. advantage14.A.make B.take C. do D. give15.A.as B.till C. over D. out16.A.deal B.dealt C. be dealt D. dealing17.A.learnt B.learned C. learning D. learn18.A.around B.to C. from D. beside19.A.to B.onto C. into D. with20.A.intelligence B.work C. attitude D. weakness完型填空（二）The rocket engine, with its steady roar like that of a waterfall or a thunderstorm, is an impressive symbol of the new space age.Rocket engines have 1 powerful enough to shoot astronauts 2 the earth's gravitational pull and 3 them on the moon.We have now become 4 space.Impressive and complex 5 it mayappear, the rocket, which was 6 in China over 800 years 7 , is a relatively simple device.Fuel that is 8 in the rocket engine changes 9 gas.The hot and rapidly 10 gas must escape, but it can do so only 11 an opening that 12 backwar D.As the gas is 13 with great force, it 14 the rocket in the 15 direction.Like the kick of a gun 16 it is fired, it 17 the laws of nature 18 by Sir Isaac Newton when he discovered that“ 19 every action, there is 20 equal and opposite reaction.”1.A.shown B.been C.appeared D.proved2.A.against B.despite C.beyond D.from3.A.send nd C.take D.carry4.A.travelers B.astronauts C.researchers D.explorers5.A.that B.so C.as D.sometimes6.A.made B.discovered C.developed D.invented7.A.in advance B.before C.earlier D.ago8.A.round B.contained C.stored D.burned9.A.as B.into C.for D.the10.A.heating B.escaping C.expanding D.conducting11.A.in B.at C.by D.through12.A.turns B.goes C.faces D.directs13.A.transmitted B.dispersed C.erected D.radiated14.A.attracts B.leads C.pulls D.pushes15.A.same B.other C.opposite D.wrong16.A.that B.when C.if D.although17.A.states B.proves C.follows D.breaks18.A.described B.discussed C.considered D.made19.A.like B.as C.with D.for20.A.no B.an C.another D.theCloze三、翻译1. 电影开演半小时了。

英语四级练习题（打印版）### English Level 4 Practice Test (Printable Version)Section A: Listening ComprehensionPart I: Short ConversationsListen to the following dialogues and choose the best answer.1. Dialogue 1:- M: Have you finished your homework?- F: Yes, I have. I'm going to the library now.- Q: What is the woman going to do next?A. Go to the libraryB. Stay at homeC. Do her homework2. Dialogue 2:- M: I heard you got a new job. Congratulations!- F: Thank you! I start next week.- Q: What can we infer about the woman?A. She lost her job.B. She is starting a new job.C. She is celebrating her job anniversary.3. Dialogue 3:- M: Would you like to go to the concert with me tonight? - F: I'd love to, but I have to study for my exam.- Q: Why can't the woman go to the concert?A. She is not interested.B. She has to study.C. She is busy with work.Part II: Long ConversationsListen to the conversation and answer the following questions.4. Conversation 1:- M: What time is the meeting tomorrow?- F: It's scheduled for 9:00 AM.- Q: When is the meeting?A. 8:00 AMB. 9:00 AMC. 10:00 AM5. Conversation 2:- M: Did you manage to book the tickets?- F: Yes, but I had to pay extra for the rush service.- Q: Why did the woman pay extra?A. She booked the tickets late.B. The tickets were expensive.C. The tickets were sold out.Section B: Reading ComprehensionPart I: Reading PassagesRead the following passages and answer the questions.6. Passage 1:- "The invention of the internet has revolutionized theway we communicate and access information."- Q: What does the passage mainly discuss?A. The internetB. Communication methodsC. Access to information7. Passage 2:- "Despite the heavy rain, the marathon runners continued their race with determination."- Q: How did the runners feel about the rain?A. They were discouraged.B. They were determined.C. They were indifferent.Part II: Vocabulary and GrammarChoose the best word or phrase to complete the sentences.8. The new policy will come into effect on the first day of next month.A. take effectB. make effectC. come to effect9. She is allergic to cats and dogs.A. allergic toB. allergic forC. sensitive to10. The company is undergoing a major restructuring.A. undergoingB. undergoing toC. under goingSection C: WritingPart I: Sentence TransformationRewrite the sentences as instructed.11. The movie was so interesting that I watched it twice. (Rewrite in passive voice)- The movie was so interesting that it was watched twice by me.12. He didn't go to the party because he was too tired. (Rewrite in negative form)- He was too tired to go to the party.Part II: Essay WritingWrite an essay on the following topic.13. Topic: The Importance of Learning English in Today's World- Begin with an introduction to the topic.- Discuss the various reasons why English is important. - Conclude with your personal opinion on the matter.Answer Key:1-5: A, B, B, B, A6-7: A, B8-10: A, A, APlease print this test and complete it within the given time limit. Good luck!。

历年英语四级考试真题练习事实上，成功仅代表了你工作的1%，成功是99%失败的结果。

以下是为大家搜索的历年真题练习，希望能给大家带来帮助!更多精彩内容请及时关注我们!1.A.Children should be taught to be more careful.B.Children shouldn't drink so much orange juice.C.There is no need for the man to make such a fuss.D.Timmy should learn to do things in the right way.2.A.Fitness training.B.The new job offer.puter programming.D.Directorship of the club.3.A.He needs to buy a new sweater.B.He has got to save on fuel bills.C.The fuel price has skyrocketed.D.The heating system doesn't work.mitting theft.B.Taking pictures.C.Window shopping.D.Posing for the camera.5.A.She is taking some medicine.B.She has not seen a doctor yet.C.She does not trust the man's advice.D.She has almost recovered from the cough.6.A.Pamela's report is not finished as scheduled.B.Pamela has a habit of doing things in a hurry.C.Pamela is not good at writing research papers.D.Pamela's mistakes could have been avoided.7.A.In the left-luggage office.B.At the hotel reception.C.In a hotel room.D.At an airport.8.A.She was an excellent student at college.B.She works in the entertainment business.C.She is fond of telling stories in her speech.D.She is good at conveying her message.Questions 9 to 11 are based on the conversation you have just heard.9.A.Arranging the woman's appointment with Mr.Romero.B.Fixing the time for the designer's latest fashion show.C.Talking about an important gathering on Tuesday.D.Preparing for the filming on Monday morning.10.A.Her travel to Japan.B.The awards ceremony.C.The proper hairstyle for her new role.D.When to start the make-up session.11.A.He is Mr.Romero's agent.B.He is an entertainment journalist.C.He is the woman's assistant.D.He is a famous movie star.Questions 12 to 15 are based on the conversation you have just heard.12.A.Make an appointment for an interview.B.Send in an application letter.C.Fill in an application form.D.Make a brief self-introduction on the phone.13.A.Someone having a college degree in advertising.B.Someone experienced in business management.C.Someone ready to take on more responsibilities.D.Someone willing to work beyond regular hours.14.A.Travel opportunities.B.Handsome pay.C.Prospects for promotion.D.Flexible working hours.15.A.It depends on the working hours.B.It is about 500 pounds a week.C.It will be set by the Human Resources.D.It is to be negotiated.Questions 16 to 19 are based on the passage you have just heard.16.A.To give customers a wider range of choices.B.To make shoppers see as many items as possible.C.To supply as many varieties of goods as it can.D.To save space for more profitable products.17.A.On the top shelves.B.On the bottom shelves.C.On easily aessible shelves.D.On clearly marked shelves.18.A.Many of them buy things on impulse.B.A few of them are fathers with babies.C.A majority of them are young couples.D.Over 60% of them make shopping lists.19.A.Sales assistants promoting high margin goods.B.Sales assistants following customers around.C.Customers peting for good bargains.D.Customers losing all sense of time.Questions 20 to 22 are based on the passage you have just heard.20.A.Teaching mathematics at a school.B.Doing research in an institute.C.Studying for a college degree.D.Working in a hi-tech pany21.A.He studied the designs of various clocks.B.He did experiments on different materials.C.He bought an alarm clock with a pig face.D.He asked different people for their opinions.22.A.Its automatic mechanism.B.Its manufacturing process.C.Its way of waking people up.D.Its funny-looking pig face.Questions 23 to 25 are based on the passage you have just heard.23.A.It is often caused by a change of circumstances.B.It actually doesn't require any special treatment.C.It usually appears all of a sudden.D.It generally lasts for several years.24.A.They cannot mix well with others.B.They irrationally annoy their friends.C.They depend heavily on family members.D.They blame others for ignoring their needs.25.A.They lack consistent support from peers.B.They doubt their own popularity.C.They were born psychologically weak.D.They focus too much on themselves.Section CDirections: In this section, you will hear a passage three times.When the passage is read for the first time, you should listen carefully for its general idea.When the passage is read for the second time, you are required tofill in the blanks with the exact words you have justheard.Finally, when the passage is read for the third time, you should check what you have written.There was a time when any personal information that was gathered about us was typed on a piece of paper and(26) ina file cabi.It could remain there for years and, often(27), never reach the outside world.Things have done a plete about-face since then.(28) the change has been the astonishingly(29) development in recent years of the puter.Today, any data that is 30 about us in one place or another--and for one reason or another--can be stored in a puter bank.It can then be easily passed toother puter banks.They are owned by individuals and by private businesses and corporations, lending 31 , direct mailing and telemarketing firms, credit bureaus, creditcard panies, and(32) at the local, state, and federal level.A growing number of Americans are seeing the aumulation and distribution of puterized data as a frightening(33 )of their privacy.Surveys show that the number of worried Americans has been steadily growing over the years as the puter bees increasingly (34), easier to operate, and less costly to purchase and maintain.In 1970, a national survey showed that percent of the people(35)felt their privacy was being invaded.Seven years later, percent expressed the same worry.Arecent survey by a credit bureau revealed that the number of alarmed citizens had shot up to percent.Questions 36 to 45 are based on the following passage.Children do not think the way adults do.For most of the first year of life, if something is out of sight, it's outof mind.If you cover a baby's(36)toy with a piece of cloth,the baby thinks the toyhas disappeared and stops lookingfor it.A 4-year-old may (37) that a sister has more fruit juicewhen it is only the shapes of the glasses that differ, not the(38)of juice.Yet children are smart in their own way.Like goodlittle scientists, children are always testing their child-sized(39) about how things work.When your child throws her spoon on the floor for the sixth time as you try to feed her, and you say, "That's enough! I will not pick up your spoon again!"the child will(40) test your claim.Are you serious? Are you angry? What will happen if she throws the spoon again? She is not doing this to drive you(41); rather, she is learning that her desires and yours can differ, and that sometimes those(42)are important and sometimes they are not.How and why does children's thinking change? In the1920s, Swiss psychologist Jean Piaget proposed thatchildren's cognitive (认知的) abilities unfold (43), like the blooming of a flower,almost independent of what elseis(44)in their lives.Although many of his specific conclusions havebeen(45) or modified over the years, his ideas inspired thousands of studies by investigators all over the world.A. advocateB. amountC. confirmedD. crazyE. definiteF. differencesG. favoriteH. happeningI. ImmediatelyJ. NaturallyK. ObtainingL. PrimarilyM. ProtestN. RejectedO. theoriesEach paragraph is marked with a letter. Answer the questions by marking the corresponding letter on Answer Sheet 2.A.Looking back on too many years of education, I can identify one truly impossible teacher.Shecared about me, and my intellectual life, even when I didn't.Her expectations were high--impossibly so.She was an English teacher.She was also my mother.B.When good students turn in an essay, they dream of their instructor returning it to them in exactly the same condition, save for a single word added in the margin of the final page : "Flawless." This dream came true for meone afternoon in the ninth grade.Of course, I had heardthat genius could show itself at an early age, so I was only slightly taken aback that I had achieved perfection at the tender age of 14.Obviously, I did what any professional writer would do; I hurried off to spread thegood news.I didn't get very far.The first person I told was my mother.C.My mother, who is just shy of five feet tall, is normally incredibly soft-spoken, but on the rareoasion when she got angry, she was terrifying.I am not sure if she was more upset by my hubris(得意忘形) or by the fact that my English teacher had let my ego get so out of hand.In any event,my mother and her red pen showed me how deeply flawed a flawless essay could be.At the time,I am sure she thought she was teaching me about mechanics, transitions (过渡), structure, style and voice.But what I learned, and what stuck with me through my time teaching writing at Harvard, was a deeper lesson about the nature of creative criticism.D.First off, it hurts.Genuine criticism, the type that leaves a lasting mark on you as a writer, also leaves an existential imprint (印记) on you as a person.I have heard people say that a writer should never take criticism personally.I say that we should never listen to these people.E. Criticism, at its best, is deeply personal, and gets to the heart of why we write the way we do. Theintimatenature of genuine criticism implies something about who is able to give it, namely,someone who knows you well enoughto show you how your mental life is getting in the way of good writing.Conveniently, they are also the people whocare enough to see you through this painful realization.For me it took the form of my first, and I hope only, encounter with writer'sblock--I was not able to produce anything for three years.F. Franz Kafka once said: "Writing is utter solitude(独处), the descent into the cold abyss (深渊) of oneself." My mother's criticism had shown me that Kafka is rightabout the cold abyss, and when you make the introspective (内省的) descent that writing requires you are not always pleased by what you find.But, in the years that followed, her sustained tutoring suggested that Kafka might be wrong about the solitude.I was lucky enough to find a critic and teacher who was willing to make the journey of writing with me."It is a thing of no great difficulty," aording to Plutarch, "to raise objections against another man's speech, it is a very easy matter; but to produce a better in its place is a work extremely troublesome." I am sure I wrote essays in the later years of high school without mymother's guidance, but I can't recall them.What I remember, however, is how she took up the "extremely troublesome"work of ongoing criticism.G. There are two ways to interpret Plutarch when he suggests that a critic should be able to produce "a better in its place." In a straightforward sense, he could mean that a critic must be more talented than the artist she critiques (评论).My mother was well covered on thiscount.But perhapsPlutarch is suggesting something slightly different, something a bit closer to Marcus Cicero's claim that one should "criticize by creation, not by finding fault." Genuine criticism creates a precious opening for an author to bee better on his own terms--a process that is often extremely painful,but also almost always meaningful.H. My mother said she would help me with my writing, but first I had to help myself.For each assignment, I was to write the best essay I could.Real criticism is not meant to find obvious mistakes, so if she found any--the type I could have found on my own--I had to start fromscratch.From scratch.Once the essay was "flawless," she would take an evening to walk me through myerrors.That was when true criticism, the type that changed me as a person, began.I. She criticized me when I included little-known references and professional jargon (行话).She had no patience for brilliant but irrelevant figures of speech."Writers can't bluff (虚张声势) their way throughignorance." That was news to me--I would need to freed another way to structure my daily existence.J. She trimmed back my flowery language, drew lines through my exclamation marks and argued for the value of restraint in expression."John," she almost whispered.I leaned in to hear her:"I can'thear you when you shout at me." So I stopped shouting and bluffing, and slowly my writingimproved.K. Somewhere along the way I set aside my hopes of writing that flawless essay.But perhaps I missed something important in my mother's lessons about creativity and perfection.Perhaps the point of writing the flawless essay was not to give up, but to never willingly finish.Whitman repeatedly reworked "Song of Myself' between 1855 and 1891.Repeatedly.We do our absolute best with apiece of writing, and e as close as we can to the ideal.And, for the time being, we settle.Incritique, however, we are forced to depart, to give up the perfection we thought we had achieved for the chance of being even a little bitbetter.This is the lesson I took from my mother: If perfection were possible, it would not be motivating.46.The author was advised against the improper use of figures of speech.47.The author's mother taught him a valuable lesson by pointing out lots of flaws in his seemingly perfect essay.48.A writer should polish his writing repeatedly so as to get closer to perfection.49.Writers may experience periods of time in their life when they just can't produce anything.50.The author was not much surprised when his school teacher marked his essay as "flawless".51.Criticizing someone's speech is said to be easier than ing up with a better one.52.The author looks upon his mother as his most demanding and caring instructor.53.The criticism the author received from his mother changed him as a person.54.The author gradually improved his writing by avoiding fancy language.55.Constructive criticism gives an author a good start to improve his writing.Questions 56 to 60 are based on the following passage.Could you reproduce Silicon Valley elsewhere, or is there something unique about it?It wouldn't be surprising if it were hard to reproduce in other countries, because you couldn'treproduce it in most of the US either.What does it take to make a Silicon Valley?It's the right people.If you could get the right ten thousand people to move from Silicon Valley to Buffalo, Buffalo would bee Silicon Valley.You only need two kinds of people to create a technology hub (中心) : rich people and nerds (痴迷科研的人).Observation bears this out.Within the US, towns have bee star,up hubs if and only if they have both rich people and nerds.Few startups happen in Miami, for example, because although it's full of rich people, it has few nerds.It's not the kind of place nerds like.Whereas Pittsburgh has the opposite problem: plenty of nerds, but no rich people.The top US Computer Science departments are said to be MIT, Stanford, Berkeley, and Carnegie-Mellon.MITyielded Route 128.Stanford and Berkeley yielded Silicon Valley.But what did Carnegie-Mellon yield in Pittsburgh? And what happened in Ithaca, home of Cornell University, which is also high on the list?I grew up in Pittsburgh and went to college at Cornell, so I can answer for both.The weather is terrible, particularly in winter, and there's no interesting old city to make up for it, as there is inBoston.Rich people don't want to live in Pittsburgh or Ithaca. So while there're plenty of hackers (电脑迷) who could start startups,there's no one to invest in themDo you really need the rich people? Wouldn't it work to have the government invest in the nerds?No, it would not.Startup investors are a distinct type of rich people.They tend to have a lot of experience themselves in the technology business.This helps them pick the right startups, and means they can supply advice and connections as well as money.And the fact that they have a personal stake in the oute makes them really pay attention.56.What do we learn about Silicon Valley from the passage?A.Its suess is hard to copy anywhere else.B.It is the biggest technology hub in the US.C.Its fame in high technology is inparable.D.It leads the world in information technology.57.What makes Miami unfit to produce a Silicon Valley?ck of incentive for investment.ck of the right kind of talents.ck of government support.ck of famous universities.58.In what way is Carnegie-Mellon different from Stanford, Berkeley and MIT?A.Its location is not as attractive to rich people.B.Its science departments are not nearly as good.C.It does not produce puter hackers and nerds.D.It does not pay much attention to business startups.59.What does the author imply about Boston?A.It has pleasant weather all year round.B.It produces wealth as well as high-tech.C.It is not likely to attract lots of investors and nerds.。